EP4634613A1 - Dispositif d'inspection d'élément fileté et méthode d'inspection correspondante - Google Patents
Dispositif d'inspection d'élément fileté et méthode d'inspection correspondanteInfo
- Publication number
- EP4634613A1 EP4634613A1 EP23833633.3A EP23833633A EP4634613A1 EP 4634613 A1 EP4634613 A1 EP 4634613A1 EP 23833633 A EP23833633 A EP 23833633A EP 4634613 A1 EP4634613 A1 EP 4634613A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- threaded element
- laser sensor
- line laser
- measuring device
- profile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2518—Projection by scanning of the object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2425—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures of screw-threads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2504—Calibration devices
Definitions
- the present invention relates to a device and a method for measuring the thread shape for a threaded element, more particularly for measuring the thread shape of elements such as a threaded joint for an oil well conduit, storage carbon dioxide or hydrogen, or geothermal wells.
- the thread form measurement determines a thread form profile in the axial screwing direction of the threaded member, and the thread elements are measured on the basis of the thread form profile.
- the thread elements include the following:
- a threaded area which is a surface portion of a threaded element axially delimited by a first thread end on one side and on the other side by a second end of this thread.
- Threaded elements have threaded ends. These threaded ends are complementary allowing the connection of a male tubular component (“Pin” in English) and a female tubular component (“Box” in English) between them. So there is a male threaded end and a female threaded end.
- a threaded zone may include so-called perfect threads or so-called imperfect threads, an imperfect thread having a section corresponding to an incomplete section of a corresponding perfect thread, for example over a reduced height.
- a thread is a set of threads of a part, male or female, generated by a geometric profile moving along a surface following a helical movement.
- a thread comprises, seen in a sectional representation, a succession of teeth or threads regularly spaced from each other.
- teeth means a niche portion i extending from the base of an engagement flank to the base of a load-bearing flank, said engagement flank and said load-bearing flank being joined by a crest.
- a male or female thread portion seen in cross section has a straight segment connecting mid-heights of flanks of threads carrying consecutive threads, said segment forming an angle with the axis of the threaded end. If this angle is zero, the thread portion is said to be cylindrical. If the angle is non-zero, the thread portion is said to be conical.
- the angle can be expressed in degrees, radiants, percentage.
- the thread angle is equal to twice the angle formed between said straight line segment and the axis of the threaded end, or the thread angle is equal to the angle at the apex of the cone formed by the segment right in generator rotating around the axis of the threaded end.
- a thread can be cylindrical, that is to say have a generatrix parallel to the axis of the threaded end, or a thread can be conical, that is to say have a generatrix forming an angle non-zero relative to the axis of the threaded end.
- a net includes two sides, engagement side and carrying side, a base of the net and a top of the net.
- stabbing flanks are the thread surfaces capable of coming into contact when the threads of the male and female threaded components are engaged into each other. They therefore correspond to the sides directed towards the free end of the tubular component considered.
- load-bearing flanks are the thread surfaces capable of coming into contact when a threaded joint is subjected to axial tensile forces. They therefore correspond to the sides directed towards the side opposite the free end of the tubular component considered.
- [11]Positive or negative angle(s) By convention, in the context of the invention, the anti-trigonometric direction will be used which is also the clockwise direction. So, a positive angle goes clockwise and conversely a negative angle goes counterclockwise.
- the machining of a tube to produce its thread implies the existence of a thread pitch.
- the notion of thread pitch must be understood in the light of the ISO 5408: 2009 standard which concerns the definition of threads.
- the thread pitch corresponds to the axial distance, over a revolution, between two successive points such that two successive vertices or two bottoms of a thread, said distance being named “P”.
- the thread pitch must be controlled in order to allow screwing between the male thread and the corresponding female thread for the assembly and use of a joint.
- the device according to the invention is transportable.
- the invention is based on the use of two optical sensors having distinct sensing directions, and the possibility of combining the measurement data from the two sensors to reconstruct a measured thread shape, thus making it possible to reduce cycle times controls, and digitize a profile which can then be validated.
- the invention provides a device for measuring the dimensions of a threaded element comprising a frame, the frame comprising a first line laser sensor having a first optical measurement direction and a second line laser sensor having a second optical measurement direction, said second optical measurement direction forming a non-zero angle with the first optical measurement direction in a plane containing the first optical measurement direction, the first line laser sensor and the second line laser sensor being movably mounted on the chassis and having at least one trajectory measurement allowing acquisition of geometric data of the threaded element passing through a calibration template and being able to pass through a portion of the threaded element, the device comprising an encoder arranged to determine a position of the first line laser sensors and a position of the second line laser sensor along a main axis and electronics arranged to construct a first partial profile from the first line laser sensor and a second partial profile from the second line laser sensor, the electronics being arranged to construct a complete profile from the first partial profile and the second partial profile as a function of the respective positions of the first
- such a device may include one or more of the following characteristics.
- the angle is between 30° and 70°, preferably between 40° and 60°. This makes it possible to measure a wide variety of hook type or dovetail type threads.
- the first line laser sensor and the second line laser sensor are mounted in translation on the chassis.
- the trajectory of the sensors relative to the part to be measured is simple and it is possible to compensate for an error in misalignment of the positioning of the threaded element relative to the device.
- the calibration template comprises surfaces delimiting predetermined reference lengths. This makes it possible to provide dimensional benchmarks for the calibration process during a measurement operation.
- the calibration template comprises a bearing face arranged to contact an end face of the threaded element to be measured. This makes it possible to minimize positioning errors of the threaded element relative to the device and to simplify the calibration procedure.
- the device comprises a positioning wedge arranged to be able to rest on the thread peaks of the threaded element. This makes it possible to simplify and make the positioning of the device on the threaded element more reliable.
- the positioning wedge comprises a frustoconical insertion surface having a frustoconical insertion surface axis and being able to be in contact with the thread peaks of the threaded element. This makes it possible to adapt the positioning block and the device to threaded elements having a conical thread.
- the support face is perpendicular to the axis of the frustoconical insertion surface of the positioning block.
- the calibration template comprises an engagement flank reference surface, a bearing flank reference surface, an axial length reference surface, a radial length reference surface.
- the calibration template comprises a longitudinal reference extension defining a reference length Dr and the electronics are arranged to determine a measurement trajectory correction factor linked to the trajectory of the first and second line laser sensors. This makes it possible to correct the measured values as a function of an offset error in the positioning of the threaded element relative to the device.
- the electronics are arranged to compare a digital thread profile comprising minimum and maximum dimensions with the complete profile and the electronics are configured to generate a result of compliance of the net. This makes it possible to give the user a result of conformity of the threaded element.
- the electronics are arranged to make dimensional measurements of surfaces of the end of the threaded element.
- the invention is also a method of measuring the dimensions of one end of a threaded element comprising the steps of:
- Figure 1 is a perspective view of the device in a measurement situation on a threaded element.
- Figure 2 is a perspective view of a calibration template according to the invention.
- Figure 3 is a perspective view of a positioning wedge according to the invention.
- Figure 4 is a schematic sectional view of an alternative embodiment of the device of Figure 1 in the context of a female type threaded element.
- the measuring device 1 as visible in Figure 1 comprises a chassis 2 comprising a table 10, substantially rectangular on which is mounted on a first side a handle 13 which an operator can operate to push the table towards a threaded element 6 or to pull the device from the threaded element 6.
- the table 10 comprises on a side opposite the first side at least one jack 12 connected to a positioning block 8.
- the device comprises two cylinders 12.
- the positioning wedge 8 isolated in Figure 3 comprises an insertion surface 9 arranged to be in contact with the thread vertices of a threaded element 6.
- the threaded element comprises a thread male presenting a conicity. Consequently, the positioning wedge 8 comprises a frustoconical insertion surface 9 with a conicity corresponding substantially to the conicity of the thread, the frustoconical insertion surface 9 being turned inwardly so as to contact the tops of the male threads of the threaded element 6 which are turned outwards.
- This frustoconical insertion surface 9 makes it possible to align the device with the axis of the thread.
- the frustoconical insertion surface 9 comprises a larger internal diameter and a smaller internal diameter such that the frustoconical insertion surface 9 is positioned on perfect threads of the threaded element 6. In fact, the insertion surface frustoconical 9 must rest on perfect threads of the threaded element 6.
- the positioning wedge 8 is dimensioned as a function of the connection model whose thread it is desired to control, more particularly the conicity of the thread of the model of the connection.
- a positioning wedge adapted to a conical connection for example of the VAM ⁇ TOP 7-5/8 type, another positioning wedge adapted to a conical connection of the VAM ⁇ 21 5-3/4 type, or even a connection cylindrical API type, etc. . .A positioning block is therefore interchangeable with another wedge on the device according to the invention.
- a positioning wedge can also be adapted to several types of connections.
- the positioning wedge 8 is truncated so as to leave the threads visible in an orientation corresponding to a measurement trajectory by dimensional sensors 3,4.
- the positioning wedge 8 allows the placement of the end of the threaded element 6, and of a calibration template 5, in a depth of field of the dimensional sensors such as the depth of field of the lasers of the dimensional sensors is constant, whatever the diameter of the threaded element.
- This depth of field can vary between 5 and 200 mm, but is preferably between 5 and 50 mm. This avoids changing the positioning of the dimensional sensors in the direction (z) perpendicular to the table.
- the device of Figure 1 comprises two cylinders or sliding axes 12 connecting the positioning block 8 to the table 10.
- the positioning wedge 8 When an operator positions the device according to the invention on one end of a threaded element 6, the positioning wedge 8 is brought around a thread of the threaded element 6, then the operator pushes the device towards the threaded element 6 using the handle 13, which facilitates gripping by the operator and the positioning gestures and installation of the device.
- the positioning wedge 8 is pushed onto the thread, until the insertion surface 9, coming to rest on the thread vertices of the thread of the threaded element 6, opposes any additional axial movement of the positioning wedge 8.
- the operator can continue to push the device towards the threaded element 6 and the cylinders or sliding axes 12 so that the positioning cone is positioned on the perfect threads and until a support face 52 of the calibration template 5 contacts the end face of the threaded element 6.
- the calibration template 5 is visible in detail in Figure 3.
- the calibration template 5 is a part specifically machined with great precision, certain dimensions of which are perfectly known and entered in an electronic memory of the device 1.
- the calibration template 5 comprises a transverse portion 51 ensuring the positioning and fixing of the calibration template 5 on the table 10 of a on the other hand, and, on the other hand, of which a flat front surface or support face 52 is intended to come into contact with an end of threaded element 6.
- the calibration template 5 comprises a longitudinal portion 53 having reference lengths whose dimensions are perfectly known. The reference lengths are delimited by surfaces.
- These lengths are therefore predetermined and serve as references for the device, and are stored in a memory of the processing electronics of the device.
- These reference surfaces are arranged to allow the device to correct the data recorded by the dimensional sensors 3, 4 which are dependent on the positions and orientations of said dimensional sensors 3, 4 relative to the threaded element 6 and the calibration template 5.
- the corrections are determined from measurements carried out by the dimensional sensors 3,4 on the calibration template 5 and the comparison of the measurements carried out with the values of the predetermined reference lengths. Correction factors can be calculated from this comparison.
- the data acquisition is corrected for the measurements carried out on the threading of the threaded element 5 with the correction factors thus calculated.
- the calibration template 5 is positioned on the measurement trajectory of the dimensional sensors 3, 4 so as to allow calibration at each measurement operation on a threaded element 6.
- the calibration template 5 comprises a bearing face 52 on its transverse portion 51 arranged to come into contact with an end face of the threaded element 6.
- the bearing face 52 is perpendicular to the axis of the frustoconical insertion surface 9 of the positioning wedge 8.
- the support of the support face 52 on the end face of the threaded element 6 makes it possible to lock the device on the threaded element 6 to carry out a measurement, and to define an orthogonal dimensional mark.
- the calibration template 5 comprises an engagement flank reference surface 54, a bearing flank reference surface 55, a reference surface of axial length 56, a reference surface of radial length 57.
- the engagement flank reference surface 54 has an orientation substantially identical to the orientation of a flank surface engagement of a thread of the threaded element 6 to be measured, in a similar manner, the reference surface of the supporting flank 55 has an orientation substantially identical to the orientation of a surface of the carrying flank of a thread of the threaded element 6. This makes it possible to improve the measurement precision on the thread flanks.
- the axial length reference surface 56 is delimited by two surfaces detached from the axial length reference surface.
- the length of the axial length reference surface 56 corresponds to a reference axial distance, and makes it possible to improve the precision of measuring the tops and bottoms of threads.
- the radial length reference surface is materialized by recesses perpendicular to the axial length reference surface 56.
- the longitudinal portion 53 is located in the extension of the truncated portion of the positioning block 8. In other words, the longitudinal portion 53 is on the measurement trajectory of the dimensional sensors 3,4.
- the device also includes a longitudinal reference extension 11 on the calibration template 5.
- This longitudinal reference extension 11 is of known dimension, so as to define a reference distance Dr, delimited on the one hand by a surface of the longitudinal reference extension 11, for example the surface facing the transverse portion 51, and a surface of the transverse portion 51. This makes it possible to identify, through the measurements carried out, a deviation in the trajectory of the dimensional sensors 3,4 relative to a theoretical trajectory parallel to the axis of the threaded element.
- the positioning wedge 8 and the calibration template 5 make it possible to position the device in a repeatable manner on the threaded element 6 and also in such a way as to make the main axis of the threaded element 6 coincide as closely as possible with a measuring axis of the device according to the invention, that is to say with a minimum deviation of the measuring axis relative to the main axis of the threaded element 6.
- the two dimensional sensors 3, 4 are identical and are line laser sensors or laser profiteers.
- a prototype was built using GOCATOR 2510 sensors from LMI Technologies.
- the two dimensional sensors 3, 4 are mounted on a support arranged to allow position and orientation adjustment on your three axes.
- your dimensional sensors 3, 4 are mounted in translation so as to move in a direction corresponding substantially to the direction main or main axis (x), so that the respective beams of the two laser profilers can travel through all the areas of interest of the end of the threaded element, namely the thread or threads, any functional surfaces and the other parts of the threaded end, or even the entire end of the threaded element.
- the displacement along the translation axis of the dimensional sensors 3, 4 is measured by a linear encoder.
- Line laser sensors emit a laser beam centered on a viewing direction, so that the projection of the laser beam forms a line on a surface to be measured.
- the laser measurement is synchronized with the measurement of an optical encoder determining a longitudinal position along the main axis (x). This makes it possible to reconstruct a complete profile from two partial profiles traced digitized by the line laser sensors.
- the distances of the points of the projected line are evaluated by an internal camera-type image capture device, the laser beam being emitted in a pulsed manner and the time of flight of the light rays being measured so as to determine a distance to the dimensional sensor .
- the aiming direction is approximately perpendicular to the face of the laser emitter.
- measuring mark O, x, y, z
- the main axis (x) is substantially aligned with a main axis x' of the thread of the threaded element 6 to measure. This alignment is obtained physically by placing the positioning wedge 8 on the threaded element.
- the secondary axis (y) is in a plane parallel to an upper surface of the calibration template 5 and the tertiary axis (z) is perpendicular to an upper surface of the calibration template 5.
- the respective sighting directions of each of the respective sensors or optical measuring directions form, in a plane containing the main axis and the tertiary axis (O, x, z), an angle A between the first direction of aiming and the second aiming direction which is between 30° and 70°.
- angle A is between 40° and 60°.
- the respective sighting directions can form a non-zero offset angle B in a plane containing the main axis (x) and the secondary axis (y).
- This angle is as close to zero as possible, but it is naturally imperfect in reality.
- this offset angle is compensated by a calibration step in the measurement process which involves carrying out a measurement step on the calibration template.
- the movement of the dimensional sensors 3, 4 does not take place strictly parallel to the main axis x' of the threaded element to be measured, but in a direction which can present a first angle of deviation a with respect to the first axis (x) in the plane (O, x, y), a second angle of deviation P relative to the first axis (x) in the plane (O, x, z), and a third angle of deviation y relative at the third axis (z) in the plane (O, y, z), the first step of measurements on the calibration template 5 makes it possible to determine correction factors depending on the first angle of deviation a, the second angle of deviation P and of the third angle of deviation y.
- the next step comprises the acquisition of a first set of measurements by the first dimensional sensor 4 and a second set of measurements by the second dimensional sensor 5.
- the set of measurements concerns the threading of the element threaded, but may relate to other functional surfaces of the threaded element, such as a stop surface, a sealing surface. These surfaces must in fact respect very precise dimensional criteria because they have critical functionalities of ensuring an assembly torque and tightness to liquids and/or gases in cooperation with a corresponding surface of a corresponding threaded element.
- the electronics are arranged to receive the measurements from the first dimensional sensor 3 and from a linear encoder whose output is representative of the positioning of the first dimensional sensor 3, the electronics are arranged to reconstruct a first partial profile of the threaded element investigated. similarly, the electronics are arranged to receive the measurements of the second dimensional sensor 4 and the linear encoder whose output is representative of the positioning of the second dimensional sensor 4, the electronics are arranged to reconstruct a second partial profile of the threaded element investigated.
- the first and second dimensional sensors 3, 4 carry out measurements on the threaded element and also on the calibration template 5.
- the electronics are arranged to record the measurements carried out on the calibration template 5 and determine from the measurements carried out the values measured on the surfaces delimiting the reference lengths, including the reference values reference surface of engagement flank 54, a reference surface of carrying flank 55, a surface reference surface of axial length 56, a reference surface of radial length 57, and to determine correction factors by comparison between the measurements made on these surfaces and the values of the actual lengths of the reference surfaces.
- the first and second dimensional sensors 3, 4 also carry out measurements on the longitudinal reference extension 11, and determine a measured reference length value Dr’.
- the electronics are arranged to determine a measurement trajectory correction factor linked to the trajectory of the first and second dimensional sensors 3,4. This factor makes it possible to compensate for a difference between the main axis of the threaded element and the axis of movement of the dimensional sensors 3, 4.
- the movement of the dimensional sensors 3, 4 can be done at variable speed, for example at a first movement speed smaller to make a denser acquisition of measurement points, and at a second movement speed greater than the first speed of movement where it is not necessary to have many surface measurement points. It is advantageous to have a slower speed and therefore more measurement points on functional surfaces such as abutment or sealing surface, or on surfaces which are very inclined relative to the main axis (x).
- the electronics are arranged to construct a complete profile of the threaded element by joining the first partial profile and the second partial profile after processing the measured data taking into account the correction factors.
- the electronics are arranged to superimpose the complete profile with a digitized profile comprising two profile plots, a maximum profile and a minimum profile delimiting a profile envelope.
- the electronics are arranged to display a compliant result to the user when the full profile is located entirely within the envelope, or to display a non-compliant result if the full profile is not entirely within the envelope. inside the envelope.
- the electronics are arranged to allow comparison of the complete profile with reference geometric shapes.
- the first partial profile may include measurement points on the thread tops, thread bottom and one of the flanks, for example the engagement flanks, due to the orientation of the first line laser sensor by relative to the thread
- the second partial profile may include measurement points on the thread tops, thread bottom, and the other side, and with respect to the example given, the load-bearing sides.
- the first partial profile and the second partial profile can have measurement points on common parts of the measured surfaces, and measurement points on distinct parts of the measured surfaces, due to the distinct and opposite orientations of the two laser sensors. lines.
- the meeting of the first partial profile and the second partial profile will therefore reveal sets of complementary points and sets of overlapping points.
- the complete profile as a combination of the two partial profiles corrected after data processing includes measurement points on all surfaces investigated.
- the device according to the invention makes it possible to implement a method of measuring the dimensions of one end of a threaded element 1, which comprises the following successive steps.
- the device 1 is brought onto the threaded element 6 and is mounted there, so that the positioning wedge 8 is placed on the thread, more precisely on the thread vertices of the thread of the threaded element 6, and more precisely on perfect thread tops.
- This installation is done by axial introduction of the positioning wedge 8 around the end of the threaded element 6 and until the positioning wedge 8 opposes any additional movement, then the chassis is pushed by an operator using the handle 13 towards the end of the threaded element, so that the jacks 12 are compressed and until the face stop 52 of the calibration template 5 contacts an end face of the threaded element 6.
- the measuring device 1 is positioned so as to minimize offsets between the axis of the threaded element 6 and a main axis x of a mark attached to the measuring device.
- a data acquisition phase is launched, during which the dimensional sensors 3,4 will travel a rectilinear trajectory passing through the measuring template and the surfaces to be measured of the threaded element 6, comprising at least one thread, and optionally a stop surface, and optionally still a sealing surface.
- a data acquisition step is carried out on the measurement template 5. Then, a step of determining corrective measurement factors is carried out by comparison between the predetermined values corresponding to the actual values of the dimensions of certain surfaces of the measurement template. calibration 5 with the values measured on said surfaces by the dimensional sensors 3,4.
- a data acquisition step is carried out on the surface(s) to be measured of the threaded element, comprising at least one thread, and optionally a stop surface, and optionally also a sealing surface, so as to obtain a first partial profile resulting from the measurements carried out by the first dimensional sensor 3 and the linear encoder and to obtain a second partial profile resulting from the measurements carried out by the second dimensional sensor 4.
- the complete profile obtained is then compared to a digital profile representing an envelope of minimum and maximum dimensions of the thread profile, and a thread conformity result is obtained, positive if the complete profile is entirely contained within the envelope defined by the digitized profile, or negative otherwise.
- Figure 4 schematically illustrates a variant embodiment of the device of Figure 1 in the context of a female type threaded element, that is to say having a thread on an internal surface of the threaded element.
- elements identical to or fulfilling the same function as those described above with reference to Figures 1 to 3 bear the same reference.
- the measuring device 1 is similar to the measuring device 1 described above with an orientation of the dimensional sensors 3, 4 adapted to emit a laser beam in the direction of the thread of the threaded element 6, and optionally of a stop surface, and optionally also of a sealing surface.
- large threaded element 6 is meant a threaded element allowing the insertion of dimensional sensors 3, 4 into said threaded element 6 with a minimum distance between the dimensional sensors 3, 4 and the surface(s) to be inspected of the threaded element 6.
- the distance between the dimensional sensors 3, 4 and the surface(s) to be inspected must be greater than the start of the measurement range of said dimensional sensors 3, 4.
- the measuring device 1 comprises mirrors 17 (see Figure 4) to direct the laser beams emitted by the dimensional sensors 3, 4 in the direction of the surface or surfaces to be inspected on the threaded element 6.
- the dimensional sensors 3, 4 are then mounted on the frame 2 to emit their laser beam in the direction of the mirrors
- said mirrors 17 being mounted movable and orientable on the measuring device 1 to redirect the laser beams.
- the measuring device 1 comprises a means for moving and guiding the mirrors 17, in the embodiment illustrated in Figure 4 a guide rail
- This means of movement and guidance is inserted into the threaded element 6 during the positioning of the measuring device 1 on the threaded element 6, typically, and, analogously to the positioning of the measuring device described above in look at Figures 1 to 3, when the frustoconical insertion surface of the positioning wedge and the support face are in support respectively against the top of the perfect threads and the end face of the threaded element 6.
- the mirrors 17 are mounted on the guide rail 18 so as to be able to move along said guide rail 18, for example by means of an ad hoc motor.
- the position of the mirrors 17 is further controlled in a manner analogous to the position control of the dimensional sensors 3, 4 of Figures 1 to 3, for example by means of a linear encoder.
- the dimensional sensors 3, 4 are oriented so as to emit a laser beam in the direction of a respective mirror 17. This laser beam is then reflected by said mirror 17 to impact the surface(s) to be inspected, for example the template, the thread of the threaded element 6, a stop surface and/or a sealing surface.
- the mirrors 17 also have a configurable orientation, for example by means of an adjustable mirror support or a pivot connection between the mirror 17 and the guide rail 18.
- the mirrors 17 are suitable to move and change orientation along the guide rail 18. This change of orientation could also be obtained by replacing the mirror 17 on the guide rail 18 with a mirror having the desired orientation.
- the orientation of the mirrors 17 makes it possible to direct the laser beams emitted by the dimensional sensors according to the desired orientation.
- the adjustment of the orientation of the dimensional sensors 3, 4 in the embodiment illustrated in Figure 1 is here replaced by the adjustment of the orientation of the mirrors 17, this orientation of the mirrors 17 defining the optical measurement directions dimensional sensors. It is thus possible, thanks to the respective orientation of the mirrors 17 and the dimensional sensors 3, 4, to define optical measurement directions forming an angle between the first direction of sight and the second direction of sight, for example an angle comprised between 30° and 70°, and preferably between 40° and 60°.
- the orientation of mirrors 17 is fixed, for example at 45° relative to the longitudinal axis of the threaded element 6, but the orientation of the dimensional sensors 3, 4 can be modified to impact the mirrors 17 with different angles, thus making it possible to orient the corresponding aiming directions.
- the mirrors 17 can take different shapes, for example flat, multi-sided, curved mirrors 17 or other to allow different orientation of the aiming directions. It is for example possible to have two mirrors 17, one for each dimensional sensor 3, 4, or on the contrary a single mirror 17 with a particular shape making it possible to orient the direction of sight according to the orientation of the dimensional sensor 3 or 4.
- the calibration template 5 is positioned on the measurement trajectory of the dimensional sensors 3, 4 defined by the mirrors 17 so as to allow calibration at each measurement operation on a threaded element 6.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2213290A FR3143731B1 (fr) | 2022-12-14 | 2022-12-14 | Dispositif d’inspection d’élément fileté |
| PCT/EP2023/085710 WO2024126631A1 (fr) | 2022-12-14 | 2023-12-13 | Dispositif d'inspection d'élément fileté et méthode d'inspection correspondante |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4634613A1 true EP4634613A1 (fr) | 2025-10-22 |
Family
ID=85936902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23833633.3A Pending EP4634613A1 (fr) | 2022-12-14 | 2023-12-13 | Dispositif d'inspection d'élément fileté et méthode d'inspection correspondante |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4634613A1 (fr) |
| JP (1) | JP7774190B1 (fr) |
| AR (1) | AR131353A1 (fr) |
| FR (1) | FR3143731B1 (fr) |
| MX (1) | MX2025006217A (fr) |
| WO (1) | WO2024126631A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03167410A (ja) * | 1989-11-27 | 1991-07-19 | Okuma Mach Works Ltd | 非接触式デジタイザ及びその較正方法並びに測定方法 |
| JP2003083739A (ja) * | 2001-09-14 | 2003-03-19 | Minolta Co Ltd | 三次元形状計測装置 |
| EP2194358B1 (fr) * | 2008-12-05 | 2011-06-01 | Tenaris Connections Aktiengesellschaft | Procédé et dispositif de mesure de paramètres de fil |
| CN110887449B (zh) * | 2019-11-29 | 2022-07-08 | 西安理工大学 | 一种螺纹测量装置 |
| CN216246127U (zh) * | 2021-08-02 | 2022-04-08 | 昆山尚瑞智能科技有限公司 | 一种基于光谱共焦的高精度螺纹测量装置 |
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2022
- 2022-12-14 FR FR2213290A patent/FR3143731B1/fr active Active
-
2023
- 2023-12-13 JP JP2025533621A patent/JP7774190B1/ja active Active
- 2023-12-13 EP EP23833633.3A patent/EP4634613A1/fr active Pending
- 2023-12-13 WO PCT/EP2023/085710 patent/WO2024126631A1/fr not_active Ceased
- 2023-12-13 AR ARP230103382A patent/AR131353A1/es unknown
-
2025
- 2025-05-28 MX MX2025006217A patent/MX2025006217A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MX2025006217A (es) | 2025-07-01 |
| AR131353A1 (es) | 2025-03-12 |
| WO2024126631A1 (fr) | 2024-06-20 |
| JP2026503837A (ja) | 2026-01-30 |
| JP7774190B1 (ja) | 2025-11-20 |
| FR3143731A1 (fr) | 2024-06-21 |
| FR3143731B1 (fr) | 2025-02-28 |
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